Lock for work supports of fastening-inserting machines



P 1949- J. F. STANDISH 2,482,131

LOCK FOR WORK-SUPPORTS OF FASTENING-INSERTING MACHINES 2 Sheets-Sheet l Inventor Jo/m FSzandzsh Filed July 23, 1945 S t. 20, 1949, J. F. STANDISH 2,482,131

LOOK FOR WORK-SUPPORTS OF FASTENING-INSERTING MACHINES Filed July 25, 1945 2 Sheets-Sheet 2 I fizvenlor Jo/m Ffizandish /2 B51 his Attorney Patented Sept. 20, 1949 LOCKFOR WORK SUPPORTS OF FASTEN- INGn-INSERTING MACHINES John F. Standish, Winthrop, Mass., assignor to United Shoe Machinery Corporation, Flemington, N. J a corporation of New Jersey Application July 23, 1945, Serial No. 606,532

8 Claims.

This invention relates to means for securing the work-support or jack of fastening-inserting machine in its operating position. It is particularly adapted for utilization with the support disclosed in Letters Patent No. 2,428,047, granted September 30, 1-947, on an application filed in my name. The invention of that application is an improvement upon the jack of Letters Patent of the United States No. 2,324,479, Brandt, July 20, 1943.

In apparatus of the character above indicated, a shoe with a heel positioned upon its heel-seat is supported upon a jack, and pressure is applied to the heel to clamp the work firmly for the insertion of nails or other fastenings through the heelseat of the shoe and into the heel to attach these work-parts. The applied clamping force may include a considerable component in a direction forwardly of the shoe. An object of my invention is to prevent positively displacement of the work-support by such a force. To this end, I combine with a support movable into and out of operating position, means for looking it automatically in operating position and freeing it to permit the travel of the support'for the removal and reception of the work, together with means acting in the operation of the machine to release the look. This releasing means is preferably furnished by the mechanism which applies to the work its clamping pressure, it having a surface contacting with a locking member to release the support when the pressure mechanism is out of clamping engagement, and freeing the locking member when the pressure mechanism travels toward engagement with the work, The control of the lock is thus gained without the addition of an element to the machine, or altering the manner of operation of any of the usual elements. As herein shown, there is utilized for this'control one of the customary side-rods by which the pressure device or work-clamping head is carried, there being formed upon the end of one of the rods an inclined cam-surface for the actuation of the locking lever. This lever may engage the slide upon which the work-support is mounted.

In the accompanying drawings illustrating a particular embodiment of the invention,

Fig. 1 shows in perspective the upper portion of a heel-attaching machine to which is applied my locking means for the work-supporting jack, the lockhere being released; and I H Zis enlarged horizontal,sectiongtakeii thro' tive;

At its top, a frame-column ll! carries a framecap 52 in which are horizontal ways it extending from front to rear of the machine. Movable in ways is a slide it, from which rises the workporting jack !5. jack has a forwardly ined tubular spindle 23, adapted to receive the pin-hole of a last within a shoe to be opera-ted on, and a bed-piece 22 arranged for contact with the crown of the last-cone. The slide is drawn forward in the ways by the operator, for the application of the work, to a position determined by the contact of a projection 24, which may be considered a part of the slide, with a stop-plate 26 attached to the cap at one side of the ways. The work having been jacked, the slide is pushed back until its rear edge engages a transverse stopbar Or abutment 28, adjustably secured to the cap [2 by slot-and-screw connections 29. With a heel applied to the heel-seat of the jacked shoe, the work. is positioned for the insertion of a nail or other fastening, which has been deposited upon the upper extremity of a reciprocatory driver's!) contained in the spindle 20. To resist the displacing force of fastening insertion, clamping pressure is applied to the heel by mechanism P. This includes a device 13 having a treadabutment 32 and a rear abutment 3 These abut-merits are supported upon a yoke 35 secured by screws 31 to the upper extremity of two siderods or mounts 38, 39, reciprocating verticallyin the frame-column and frame cap under the power of the machine, as disclosed in detail in United States Letters Patent No. 2,033,158, granted March 1-0, 1-936, on an application filed in my name. The lowerin of the pressure device 3?) into preliminary engagement with the work and the application of final pressure thereto, together with the reciprocation of the driver under the power of the machine, are produced through the depression of an unillustrated treadle,

As the two abutments of the device 10 engage a heel to be attached to a jacked shoe, the forces applied not only act vertically to urge the cup of the heel against the heel-seat upon which it has been placed, but also have a horizontal component. In absence of preventive means the lastmentioned force, acting through the work, tends to displace the jack and slide forwardly, so full clamping pressure is lost. To look the jack in fastening-inserting or operating position, there is ivoted at 40 on the cap 12, adjacent to the guide-way l4 near which the projection 24 moves,

a lever *42 h'a'v1fng* s ear and "lower aim lower arm flfofthisflever has afshoulder 4B 7 h is-normauy drawn-byetension spring towns the projection 24, its movement in this direction being limited by contact of an arm-extension 50' with the projection. The extent of movement is such, that when the rear edge of the slide has reached the stop-bar 28, the spring carries the shoulder to the forward side of the projection, locking the slide against displacement in this direction. This relation is illustrated in Fig. 2,

the lever 42 being in its active or looking posi-.

tion.

The lever 42 has an upper arm 54 extending oppositely to the arm 44 and having rotatable upon it a roll 56. This roll lies in the path of a cam-incline 58 on the upper extremity of theside-rod 38. The vertical relation of this camincline is such, that when the pressure device p has been raised to its normal position, said incline will engage the roll, turning the lever 42 clockwise sufficiently to separate the shoulder 46 from the slide-projection 24, as appears in Fig. 1. This condition exists after the attachment of a heel to a shoe has been completed. The operator may now draw out the slide 16 and jack I8, remove the work, apply to the jack another shoe with its heel and shift it rearwardly to operating position. The arm-extension 50 is at this time drawn by the spring 48 against the head of the adjacent screw 29, which serves as a movement-limiting stop. As the pressure mechanism P is lowered for this succeedin operation through the usual treadle-actuation, and the device p travels toward the jacked work, the camsurface 58 leaves the roll 56. The lever 42 being thus freed, the spring 48 causes the shoulder 46 to assume its locking position in front of the projection 24. The slide and jack are now held positively between the bar 28 and the lever-shoulder against displacement, either forwardly or rearwardly, by any force which may be applied. The adjustability of the bar, foreand aft of the machine, permits it to stop the rearward travel of the slide when the projection is in exactly the correct location to receive the action of the looking shoulder. Full depression of the treadle causes the power-operation of the machine, with the application of final pressure, the insertion of the heel-attaching fastenings, and the return of the pressure mechanism to its normal relation. The cam 58 there engages the roll 56 and frees the slide from the locking lever, as already described, for the forward movement of the jack by the operator, and its succeeding return to operating position. It will be seen that the control of the lever 42 is exercised in an entirely automatic manner, the lock being applied and released at the appropriate times, without thought or eiTort on the part of the operator, and insuring against accidental displacement of the jack'under pressure. 1

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:.

1. In a heel-attaching machine, a, frame, a shoe-support movable in the frame between work-receiving and fastening-inserting positions; a lock movable to and from an active position in which it secures the support against movement in said fastening-inserting position, a reciprocative clamp having tread and rear abutments mov- I able in one direction and cooperating with the support to force a heel against the heel-seat por-' tion of a shoe mounted upon said support locked in fastening-inserting position, and mechanism responsive to movement of the clamp in an op-- posite direction for moving the look awayfrom its active position to permit the support to be moved to its work-receiving position.

2. In a heel-attaching machine, a frame having a guideway, a support movable in said guide- 5 way between work-receiving and fastening-inserting positions, an abutment which the .sup- 7 port engages when in its fastening-inserting position, a stop, a lock for retaining the support in its fastening-inserting position in engagement with said abutment, a spring for constantly urging the look toward said stop, a reciprocative pressure device movable in one direction to an active position to force a heel against the heelseat portion of a shoe mounted upon the sup- 5 port, and mechanism responsive to movement of the pressure device in a direction opposite to said one direction for actuating said lock against the action of said spring into a position in which it permits the support to be moved to work-receiving position in the guidelway, said mechanism being also movable, in response to movement of the pressure device in said one direction, away from the lock to permit the lock acted upon by the spring to move into active locking position for retaining the support against the abutment and, accordingly, in its fastening-inserting position.

3. In a fastening-inserting machine, the combination with a frame of a work-support movable on the frame into and out of operating position, a member movable to and from an active position in which it looks the support in operating position, and pressuremechanism which is movable into and out of clamping engagement with work upon' the support and is provided with a surface constructed and arranged, upon movement of said mechanism out of clamping engagement with said work, to contact thelocking member and to move it out of member in response to movement of the pressure a mechanism away from the support to release the then looked support to permit it to be moved to work-receiving position.

5. In a heel-attaching machine, a shoe-support movable between work-receiving and fasteninginserting positions, a movable member acting 5 during a portion of its movement to lock the shoe-support in the fastening-inserting position and during another portion of its movement to release said shoe support, a pressure device arranged for clamping engagement with a heel 5 upon the heel-seat' of a shoe upon the support, a reciprocatory support for the pressure device, and means carried by said support constructed and arranged to engage saidrnovable member in its locking position during reciprocation of said support in order to release the shoe-support. 6. In a heel-attaching machine, a frame, a slide movable upon the frame, a jack carried by the slide and presented thereby in work receiving and fastening-inserting positions, a

pressure head movable to clamp a heel upon the heel seat of a shoe upon the jack in its fastening-inserting position, a member movable upon the frame into locking engagement with the slide when the shoe-support is in fastening-inserting position and the pressure head is effective to force the heel against said heel seat, and side rods arranged to reciprocate in the frame and carrying the pressure head, one of said side rods being provided with a cam surface constructed and arranged to actuate the locking member then in looking engagement with the slide to release the slide when the pressure head has moved out of engagement with the heel.

7. In a heel-attaching machine, a frame, a slide movable upon the frame, a jack carried by the slide and presented thereby in workreceiving and fastening-inserting positions, opposite side-rods arranged to reciprocate in the frame, an end of one of the side-rods being provided with a cam-incline, a pressure-head movable by the side-rods into and out of clamping engagement with a heel upon the heel-seat of a shoe upon the jack in fastening-inserting position, and a locking lever movable upon the frame into locking engagement with the slide when the shoe support is in fastening-inserting position and the pressure head is efiective to force the heel against the heel seat of the shoe, said lockthe path of the slide to prevent movement thereof from fastening-inserting position, a stop carried by the frame in the path of the slide to limit its movement into fastening-inserting position, and means arranged to vary the location of the stop toward and from the locking member.

JOHN F. STANDISH.

REFERENCES CITED The following references are of record in the file of this patent:

v UNITED STATES PATENTS Number Name Date 7 467,104 Hyslop Jan. 12, 1892 2,109,040 Twomley Feb. 22, 1938 

